Four(4) XYZA or Three(3) XYYZ Axis, Four(4) Motor Brushed DC Servo CNC Controllers

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This Machine Tool Servo Motor Controller was designed to operate with brushed servo motors that have optical encoders attached. The encoder signals are differiential making long motor cables possible.

Controller can be made with two of the motor drivers are synchronized for gantry styled machine tools or four independent axis motors.

Powered by an Internal 60 volt, 10 amp power supply with a choice of either 120 or 240 VAC input power. There is a power switch on the connector panel.

Two internal relays are 10 ampere contact type. Controllers connector panel can have switched input power or a terminal block for the internal relay contacts.

There is a DB15 Female connector for each servo motor. The single ended encoder signals, servo power and limit switches are all combined into this connector.

The servo motors included with the EMC-XYYZ-GSBX kits are rated at 72 Volts, 8.5 Ampere and 850 oz/in Torque. Designed for direct replacement of NEMA 34 size stepper motors with servo motors.

The controller cabinet is a 12" X 12" X 6" electrical utility box with rubber feet mounted on the bottom. The weight of the controller is 36 lbs.

Controller is shipped in a 15" X 15" X 10" cardboard box. 38 lbs shipping weight.

EMC-XYYZ-GSBX Connector Pin Signal Assignments
Servomotor Controller Parallel Port Signal Pin Assignments

Pin 1 Home Mode needs to be high during Home command execution, this synchronizes the two Y motors. When one engages the limit switch it will stop until the other motor also engages it's limit switch.
Pin 2 X Step is normally Low, pulsing High to step the X motor one increment of movement.
Pin 3 X Dir controls the direction of the motors rotation.
Pin 4 Y Step is normally Low, pulsing High to step the Y motor one increment of movement.
Pin 5 Y Dir controls the direction of the motors rotation.
Pin 6 Relay A is normally Low, when High Relay A is turned on.
Pin 7 Relay B is normally Low, when High Relay B is turned on.
Pin 8 Z Step is normally Low, pulsing High to step the Z motor one increment of movement.
Pin 9 Z Dir controls the direction of the motors rotation.
Pin 11 X LIMIT is normally low until the X Limit switch is engage which will make it High.
Pin 12 Y LIMIT is normally low until the Y Limit switch is engage which will make it High.
Pin 13 Z LIMIT is normally low until the Z Limit switch is engage which will make it High.
Pin 14 START must go High for three(3) seconds to enable the servomotor driver modules.
Pin 15 *SERVO FAULT is normally High when motors are enabled and working properly, it will be driven Low on servo fault condition.
Pin 16 *INIT is normally High, driven Low by the Host computer on Reset, thus disabling the motor driver modules.
Pin 17 STOP is normally Low, when driven High by the Host computer it will disable the motor driver modules.
Servomotor Connector with single ended encoder signals pin assignments
One female DB15 connector for each motor, X, Y1, Y2 and Z.

Pin 1 and 9 ARM(-) is normally the Black wire to the motors armature.
Pin 2 and 10 ARM(+) is normally the Red wire to the motors armature.
Pin 3 ENC(-) is the encoder's return line, normally Black wire.
Pin 4 ENC(+) is the encoder's +5 Volts for power, normally Red wire.
Pin 5 PHASE A is the encoder's A channel output, normally Blue wire.
Pin 6 PHASE B is the encoder's B channel output, normally Yellow wire.
Pin 14 LIMIT SWITCH SENSE shorted to return on limit switch being engaged, normally Yellow wire.
Pin 15 LIMIT SWITCH RETURN, normally Green wire.
EMC-XYYZ-GSBX Servo Controller Specifications
Computer Interface:Standard Parallel Port, Female DB25 connector on box
Input Power:120 or 240 VAC
Internal Power Supply:60 Volts DC unregulated
Axis:X, Y1, Y2, Z
The Y1 and Y2 motors are synchronized
Motor Type:Brushed DC Servo Motor
With Quadrant TTL optical encoder
Single Ended Encoder Signals
Motor Sizes:NEMA 23 or NEMA 34 frame size
Motor Drive Configuration:NEMA 23 or NEMA 34 frame size
Motor Connectors:Female DB15 connector, one for each motor
Minimum Step Pulse Width:5 microsecond, Normally Low
Limit Switches:One per Motor Connector, Pin 14 & 15
Y axis limit switches synchronize the Y motors during HOME command
Relays:Two internal 10 ampere contact relays
Terminal Block on connector panel or Switched Power Outlets
Cooling:Large internal heatsink for drive modules
Two fans draw air in and force it out of cabinet over heatsinks
Cabinet Construction:All Metal UL approved electrical enclosure
Rubber Feet on Bottom
Panel Connections:Power ON/OFF Switch
Parallel Interface DB25 Female Connector
Four(4) DB15 Female Connectors
Terminal Block or Switched Power Outlets
Box Size:12" x 12" x 6" Box with removeable cover
Color:Tool Grey with Black Acrylic Connection Panel
Controller Box Weight:36 lbs
Price List
Brushed Servomotors, Controller, Cables BundlePart# EMC-XYYZ-GSDX-K4B  XYYZ, Four (4) Motor, Three(3) Axis, Differential Encoder input, Brushed Servo Motor Controller. The two Y motors are synchronized for driving a machine gantry at both ends. Internal 60 Volt, 10.4 Amp Power Supply, input voltage is 120/240 VAC. Includes: Four (4) NEMA 34 Servomotors Torque 850 oz/in; One Male to Male Parallel Printer Port Cable; Four (4) 10 ft. motor cables. In metal box 12 x 12 x 6 inches.   Weight: 87 lbs........$4,495.00
Servo Motor Controller, four(4) Big motors included.Part# EMC-XYYZ-GSBX-K4B  XYYZ Servo Motor Controller with four (4) servo motor drives, two are synchronized for driving a gantry machine at both ends. Includes: Four (4) NEMA 34 Servomotors 72 Volt, 8.5 Ampere, 850 oz/in; 60 Volt, 10 Amp Internal Power Supply; One Male to Male Parallel Printer Port Cable; Four (4) 10 ft. servo motor cables. In metal box 12 x 12 x 6 inches.   Weight: 87 lbs........$3,995.00
PN#USB-CamPod, CNC USB Motor Controller, 3 Axis XYZ, Includes SuperCamXpPart# USB-CamPod  CamPod is USB to Parallel Port Type Connector for XYZ Three Axis Motor Indexer for Generating Step and Direction Signals for Motor Drivers and Relay Control signals. Comes with SuperCamXp Machine Control Program, Windows Xp, Windows 7 and Vista Compatible CNC Machine Tool Motor Control. CAD Graphical User Interface Alternative to Mach3.   Weight: 2 lbs........$495.00

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Pictures

Controller, four(4) large servo motors connected via servo cables.

Four(4) of our largest Brushed Servo Motors.

Closeup of connector panel for the Switched Power Outlet option controller.

Power Input can be either 120 or 240 VAC

DB15 Male connector on the Servo Motor.

Home Limit Push Button Switch attached to each Servo Motor.

Top and Rear of Controller

Toroidal Transformer Mounted on inside of Top Plate. There are two secondary windings, one for providing power to the servo motors and the other for powering the fans and the logic circuitry. The input windings can be configured parallel or series depending the input voltage provided.

Controller Box with the cover plate off.

Internal Power Supple Bridge rectifier mounted on heatsink.

Inside of controller box showing the connector panel from the inside.

Inside of controller box, showing the rear where fans are mounted and the power input cable enters the box. The fans pull air in from the outside and force it out through the heatsink extrusions that the Gecko G320 drive are mounted too.


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Copyright 2016 Dennis Bohlke
Revised 03/12/16